NBBJ, a global architecture and design firm, and Chan Krieger Sieniewicz, internationally-known for urban design and architecture excellence, announced today a merger of the two firms that will create an integrated team of over 700 architects, landscape architects, urban designers, planners and interior designers.

The Chan Krieger Sieniewicz team, including its five principals, will continue in their current roles. As part of the transition to the NBBJ name, the Cambridge office will operate as Chan Krieger NBBJ.

The merger gives NBBJ, which already operates a project office in Boston, a larger presence in New England. The Seattle-based firm has offices in several U.S. cities, including Columbus, Los Angeles, New York, San Francisco and Seattle. Overseas offices include London, Beijing, Shanghai and Dubai.